v1: AlertDialog on_dismiss is never called

[michep]

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• I have searched the opened issues and there are no duplicates

Describe the bug

Hello,
in flet==0.70.0.dev5089 AlertDialog on_dismiss handler is never called.

Code sample

Test AlertDialog.on_dismiss handler

import flet as ft


def main(page: ft.Page):

    def on_dismiss():
        print('DISMISSED')

    def open_dialog(e):
        page.show_dialog(ft.AlertDialog(content=ft.Text('test dialog'), on_dismiss=on_dismiss))

    page.floating_action_button = ft.FloatingActionButton(
        icon=ft.Icons.ADD, on_click=open_dialog
    )
    page.add(
        ft.SafeArea(
            expand=True,
            content=ft.Text('test'),
        )
    )

ft.run(main)

To reproduce

run program, click FAB, close dialog that appeared, on_dismiss will not be called

Expected behavior

on_dismiss handler should be called and "DISMISSED" printed

Screenshots / Videos

Captures

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Operating System

Windows

Operating system details

Windows 11

Flet version

0.70.0.dev5089

Regression

Yes, it used to work in a previous Flet version (please specify the version in additional details)

Suggestions

No response

Logs

Logs

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Additional details

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